Method updateColorPicker

Gui/ViewerGL.cpp:2611–2727

used to update the information bar at the bottom of the viewer (not for the ctrl-click color picker)

// used to update the information bar at the bottom of the viewer (not for the ctrl-click color picker)
void
ViewerGL::updateColorPicker(int textureIndex,
                            int x,
                            int y)
{
    if ( (_imp->pickerState != ePickerStateInactive) || !_imp->viewerTab || !_imp->viewerTab->getGui() || _imp->viewerTab->getGui()->isGUIFrozen() ) {
        return;
    }

    const std::list<Histogram*>& histograms = _imp->viewerTab->getGui()->getHistograms();

    // always running in the main thread
    assert( qApp && qApp->thread() == QThread::currentThread() );
    if ( !displayingImage() ) {
        for (std::list<Histogram*>::const_iterator it = histograms.begin(); it != histograms.end(); ++it) {
            if ( (*it)->getViewerTextureInputDisplayed() == textureIndex ) {
                (*it)->hideViewerCursor();
            }
        }
        if ( _imp->infoViewer[textureIndex]->colorVisible() ) {
            _imp->infoViewer[textureIndex]->hideColorInfo();
        }
        if (textureIndex == 0) {
            setParametricParamsPickerColor(OfxRGBAColourD(), false, false);
        }
        return;
    }


    QPoint pos;
    bool xInitialized = false;
    bool yInitialized = false;
    if (x != std::numeric_limits<int>::max()) {
        xInitialized = true;
        pos.setX(x);
    }
    if (y != std::numeric_limits<int>::max()) {
        yInitialized = true;
        pos.setY(y);
    }

    QPointF imgPosCanonical;
    if (!xInitialized || !yInitialized) {
        if ( !_imp->viewerTab->isViewersSynchroEnabled() ) {
            pos = mapFromGlobal( QCursor::pos() );
            QMutexLocker l(&_imp->zoomCtxMutex);
            imgPosCanonical = _imp->zoomCtx.toZoomCoordinates( pos.x(), pos.y() );
        } else {
            ViewerTab* masterViewer = getViewerTab()->getGui()->getMasterSyncViewer();
            if (masterViewer) {
                pos = masterViewer->getViewer()->mapFromGlobal( QCursor::pos() );
                imgPosCanonical = masterViewer->getViewer()->toZoomCoordinates(pos);
            } else {
                pos = mapFromGlobal( QCursor::pos() );
                QMutexLocker l(&_imp->zoomCtxMutex);
                imgPosCanonical = _imp->zoomCtx.toZoomCoordinates( pos.x(), pos.y() );
            }
        }